64475938 has 4 divisors (see below), whose sum is σ = 96713910. Its totient is φ = 32237968.

The previous prime is 64475927. The next prime is 64475947. The reversal of 64475938 is 83957446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42732369 + 21743569 = 6537^2 + 4663^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16118983 + ... + 16118986.

Almost surely, 2^64475938 is an apocalyptic number.

64475938 is a deficient number, since it is larger than the sum of its proper divisors (32237972).

64475938 is a wasteful number, since it uses less digits than its factorization.

64475938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32237971.

The product of its digits is 725760, while the sum is 46.

The square root of 64475938 is about 8029.6910276797. The cubic root of 64475938 is about 400.9890897378.

The spelling of 64475938 in words is "sixty-four million, four hundred seventy-five thousand, nine hundred thirty-eight".